Ingxubevange ye-nickel yethusi inokumelana nogesi okuphansi, ukumelana kahle nokushisa futhi ukumelana nokugqwala, kulula ukucutshungulwa futhi kushiselwe umthofu. Isetshenziselwa ukwenza izingxenye ezibalulekile ku-thermal overload relay, ukumelana nokushisa okuphansiI-circuit breaker, nezinto zikagesi. Kubuye kube yinto ebalulekile yekhebula lokushisa likagesi.